Classic N Series guitar strings from Thomastik-Infeld are crafted of heavy duty nylon. The bass E, A are chrome steel flat wound. The treble strings are made of selected nylon. Classic N Series strings are easy to play and give the player high-quality classical guitar strings at a budget price.

Over the years, I have tried many different makes and types of guitar strings for my classical guitars. The CF 128 Superlona series by Thomastik-Infeld is the most pleasing. The strings are so smooth, that there are practically no finger "squeaks" when you move along the fret board. Their softness is unsurpassed. Durability is acceptable. If you are wanting the best...look no further.